Nut-lock.



No. 661,558. Patented Nw. I3, |900.

E. A. sHuFF.

NUTfLCK.

(Application mea May 15. 193m No Model.)

l '/1 mm 22 -M/f/ anni Illlll Uiirnn STATES' PATENT Fries.

ERVlN A. SIIUFF, OF MATIIEWSON, OKLAHOMA YIERRITORY.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 661.558, dated November 13, 1900.

'Application filed May l5, 1900. Serial No. 16,825. KNO model.)

T0 all when?, 15 may coztcern:

Be if. known that l, ERVIN A. SHUFF, a citizenof the United States, residing at Mathew son, in the county of Canadian, Oklahoma 'leri-itory, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has relation tomeans for preventing the loosening ot nuts and bolts after the same have been properly positioned and tightened, and has for its object to provide simple and effective'devices for attaining the object aforesaid and which are easily operable and certain and positive in action.

For a full description of the invention and the merits thereof, and also to acquire a knowledge of the details of construction of the means for effecting the result., reference is'to be had to the appended description and drawings hereto attached.

While the essential and characteristic features of the invention are necessarily susceptible of modification, still the preferred embodiment of the invention is illustrated in the accompanying drawings, in which-- Figure 1 is a perspective view showing the application of the invention. Fig. 2 is a side elevation, parts being broken away. Fig. 3 is a section on the line X X of Fig. 2looking in the direction of the arrow. Fig. it is a detail section on the line Y Y of Fig. 2. Fig. 5 is a view in elevation of the inner side of the nut. Fig. o' is a detail View of the washer looking at the side having the projectionsto match with the inner side of the nut.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.v

The bolt 1 is provided at one end with a head 2 and shouldered portion 3, and its opposite end is threaded for a short distance from its end, as shown at L1. The shouldered portion 3 is designed to prevent the turning of the bolt w-hej; positioned with reference to the part to be secured, and may be of angular formation or other desired shape common in devices of this kind. A series of grooves extend lengthwise ol' the bolt and intersect with the threads thereof, and one wall of the grooves is straight, as shown at 6, to provide an abutting shoulder for the locking pin or dog, and the other wall is inclined, as shown at 7, for the said pin or dog to ride upon when screwing the nut home upon the bolt.

'lhe nut 8 has its openings internally threaded to match the thread 4 of the bolt and is provided upon its inner face with a series of depressions f) anda corresponding num ber of projections l0, the latter being disposed at the cornersand the recesses intermediate the edges of the nut. The purpose of the projections 10 and depressions 9 is to provide interlocking means between the nutand the washer ll, which is fitted loosely upon the bolt, so as to slide freely over the threaded portion. The washer 11 'is preferably of a size corresponding with that of the nut 8, so as to come flushat its edges with the corresponding edges of the nut. Depressions 12 are formed in the outer face of the washer and projections 13 at intermediate points, the projections and depressions alternating and positioned so as to match with the corresponding parts 9 and l0 ofthe nut 8. \Vhen the parts 8 and 1l are mated, they are prevented from relative turning by reason of the interlocking of the cooperating projections and depressions.

A spring-actuated locking pin or dog 14 is fitted to the washer and cooperates with the grooves 5 of the bolt to prevent backward rotation of the nut and washer after these parts have been screwed upon thc bolt. This pin or dog is located in an opening formed in a side of the washer and leading into the bolt opening thereof'. A tube l5 is fitted into the side opening of the washer and its outer end projects a short distance to receive a cap 16, removably fitted thereto. The pin or dog is provided at its inner end with a beveled head 17 to operate in a contracted portion of' the side opening and an outer portion 18, forming a shoulder to,limit the inward movement of the pin under the action of the coil-spring 19, which is mounted upon the said piu and conned between the shouldered portion thereof and the central portion of the cap 16. One side of' the head 17 is' straight to abut against the shouldcrl of the grooves 5, and

IOO

l therein.

,e l senses the opposite side is beveled to ride upon the inclined Wall 7 of the grooves. The cap 16 detachably fitted to the projecting.; end of the tube 15 and is formed centrally with an opening 20 of siieh cross-sectional outline to prevent relative turning ot' the pin or dog 14 and hold the head l'thereof in proper position to engage with the shouldered poi'- tion of the grooves 5. As shown, the opening,r 2O is of square form, and the outer end of the pin 14 is of corresponding shape to tit A bayonet-joint is provided between the Cap 16 and the projeeting` end of the tube 15 to bold said cap in position, and this joint comprises a rentrant `groove 31 in the inner wall of the rimportion of the eap andapin 22,piiojeetineT laterally from the side of the tube 15, so as to eoperate with ihe groove 21 and hold the eap 1G in position. When the eap is in position, the pin 22 is seated in the inner end of the return portion 23 of the groove 2l and is held in place by the action of the spring1f), which serves lnormallyv to torce the cap 16 outward, as Well as to move the lookingpin or dog 14 inward. It Will thus be seen that the spring' 1f) performs a dual function-namely, to hold the inner end of the dog in engagement with the grooves of the bolt and to retainthe pin 22 in the inner end of the return portion 23 of the groove 21, whereby the eap is held in place. A groove 2i is formed in the innerer bottom side of the cap 1 6 to receive the outer end of the tube l5 when pressing the cap inward, so as to disengage the pin 22 from the return portion 23 of the groove 21 when it is required to remove the eap. When the-cap is in place, the paris are so disposed that the head portion of the locking pin or dog will engage squarely with the shoulder G of any one of the grooves 5 and prevent unloosening of the nut. Then it is required to remove the bolt or nu t, the cap 16 is disengaged from the outer end of the tube 15, when the pin or dog 14 eau be drawn ont-of engagement with the bolt and permit the removal of the nut by a Wrench or Spanner in the Well-known manner. In order to prevent weakening of the Washer 1l by the provision of the opening therein to receive the tube 15, the lat-ter is located opposite a projection 13. This vtube may be seeiired in the opening' oi the washer in any substantial manner and as found most economical and convenient.

Having thus described the invention what is claimed as nenr is 1. In'a nut-leek, and in combination with the bolt provided in its sides with a series of longitudinally-disposed grooves, means for seeurinfbr the nut, the saine consisting;` of a 6o spring-actuated looking pin or dog, and a eap ler holding` the said pin or dog in place and in turn prevented from casual displacement hy the actuating-spring of the said dog, substantially as set forth.

2. In a i1ut-loek,ineans for preventing unloosening et the nut when tightened, the same consisting,` oil a pin or denr adapted to interlool; with the bolt, a cap for holding` the dog in plane, an approxiin-fitoly bayonet-shaped 7c joint between the Cap and the part. to vwhich it is titled, and a springr disposed to exertnn outward pressure upon the Cap to prevent casual disengagement ol' lhe joint and inward pressure against the said dei; tohold it in en-V gagement with the bolt, substantially as sei forth.

In a nut-look, means tor securing-the nut, the saine consisting;l of a tube, a pin :did-

ingly mounted in the tube und adapted to eo- 8o operate with the bolt, a oap fitted to the outer end of the tube and heid thereon by a joint of approxinniiely bayonet torni, and a spring mounted upon the pin and confined between the cap andthe shouldered portion of the said iin and exerting a 'iressnre in o i iosite direc- 1. e tions against said eap and pin, substantially as and for the purpose set forth. t

it. In a nut-look, a tube and lookingpin loosely mounted in the tube, a eap detaeh- 9o ably fitted to the outer end of the tube and having a Central opening to receive the outer end ot the pin, an approximately bayonetshaped joint between the cap and tube to retain the former in place, and a spring' located o5 

